Xu XD, Yu LP, Yin HP, Chen XN, Chen H. Expression and changes of neuropeptide Y in the development of mouse stomach.
Shijie Huaren Xiaohua Zazhi 2009;
17:120-123. [DOI:
10.11569/wcjd.v17.i2.120]
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Abstract
AIM: To observe expression, distribution and development of neuropeptide Y in stomach of mouse embryo and to investigate relationship between the histological changes, functions and neuropeptide Y.
METHODS: HE staining and immunohistochemistry SABC method were used to study the expression of mouse stomach neuropeptide Y from embryonic day 13 (E13D) to day 21 (E21D).
RESULTS: Neuropeptide Y was positively expressed in embryonic muscle and epithelial mucosa with the successive growth in the mucosal plexus, muscular mucosa, submucosa, submucosal plexus in the fetal rat stomach at different development stages. Immune-response was increasingly strong with its peak value in E18D. There was a significant increase in the total number density of NPY in the stomach wall in E15D and significant differences were observed between E15D and E14D (2.26 ± 4.19 vs 1.05 ± 3.91, P < 0.05). The total area density was significantly increased in E18D, and significant difference was noted between E14-16D and E19D-21D (9.00 ± 3.41 vs 1.12 ± 1.10, 1.88 ± 4.75, 3.77 ± 5.09, 3.39 ± 3.11, 3.36 ± 4.11, 3.43 ± 3.16, P < 0.01); positive expression mucosa density was significantly higher in E18D than in the other groups (7.35 ± 5.01vs 2. 45 ± 2.79, 3. 41 ± 3.25, 5.89 ± 7.43, 3.55 ± 3.78, 4.33 ± 6.52, 3.21 ± 6.25, 2.77 ± 6.13, P < 0.05 or 0.01).
CONCLUSION: E14-E18D is a critical period in development of mice stomach. Neuropeptide Y is closely related to development of stomach.
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